90147538 has 8 divisors (see below), whose sum is σ = 145622988. Its totient is φ = 41606544.

The previous prime is 90147523. The next prime is 90147553. The reversal of 90147538 is 83574109.

It is an interprime number because it is at equal distance from previous prime (90147523) and next prime (90147553).

It can be written as a sum of positive squares in 2 ways, for example, as 86918329 + 3229209 = 9323^2 + 1797^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×90147538² = 16253157214922888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90147497 and 90147506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1733581 + ... + 1733632.

Almost surely, 2^90147538 is an apocalyptic number.

90147538 is a deficient number, since it is larger than the sum of its proper divisors (55475450).

90147538 is a wasteful number, since it uses less digits than its factorization.

90147538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3467228.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 90147538 is about 9494.6057316773. The cubic root of 90147538 is about 448.3852215188.

The spelling of 90147538 in words is "ninety million, one hundred forty-seven thousand, five hundred thirty-eight".